Hermann c ohrs



i 106. COMPOSITIONS,

COATING OR PLASTIC.

CTOSS Referenc? 121i" f Examini:

' si -aw PATENT OFFICE.

HERMANN courts, or BERLIN, GERMANY.-

PROCESS OF WATERPROOFING TEXTILE 'M'ATERIAL.

WM was srEomcArIoN forming part of Letters Patent No. 540,636, dated June 11, 1895.

. lpplicstion filed June 18,1894- Serial No; 514,447. (No specimens.)

To all whom it may concern:

Be it known that I, HERMANN COHRS, a subject of the Emperor of Germany, and a resident of Berlin, in the Kingdom of .Prussia,

5 Germany, have invented certain new and useful Improvements in Processes of Water- I proofing Textile Materials, of which the following is a specification.

, The hitherto known methods of impreg- IO nating textile fabrics, to render them waterproof, have been more or less unsatisfactory,

especially as they could notes a rule be applied to fabrics after they were worked up into garments and other finished articles and r 5 even waterproof overcoats of india rubber I declare that what I claim istend to become soft in heavy rain.

The present invention has for its object, the waterproofing of finished garments, such as trousers, Waistcoats, coats, mantles, hats, 2o ladies jackets and bounets, without in the least affecting the color and softness of the objects treated, and without unnecessarily interfering with the ventilation. For this purpose I employ a mixture composed of 2 5 water, hot, five liters; alum pulverized or in pieces, two hundred grams; soluble siligfite ofsggaorof potash,onehundre an seven yve grams; vase ine white, three hundred w grams. This mixture is thoroughly stirred 30 and when still warm, applied by means of a brush to the fore or right side of the garment The fabrics or other objects to be impregnated as described are previously spread out -on long plates and suitably heated. Subsequently waterproofing mixture is applied with the brush, and the fabrics or garments are 0 immediately exposed to a dry heat at about 70 Celsius for about ten to fifteen minutes, after which they are ready for use. Y

This process of impregnation is not only very cheap and rapid, but it produces also a 5 durable effect.

Having now particularly described and ascertained the nature of the said invention and 'in what manner the sameis to be performed,

The process of waterproofing textile materials or fabrics and finished articles of wearing apparel, which consists in applying a mixture of alum, soluble silicate of soda or of potash, vaseline and hotwater in the proportions described, to the right side or face of the previously heated fabric or garment, and exposing the impregnated object to a dry heat of about 70 Celsius for about ten t6 fifteen minutes, substantially as described. 6

In testimony that I claim the foregoing as my invention I have signedlmy nameinpresence of two subscribing witnesses.

HERMAN conas.

to be waterproofed. Fabrics thus treated 1 are perfectly waterproof without materially v air and without};

preventing the circulation of 5 spreading any odor. 

